I created these diagrams to help understand the interior spacial differences between the Protrail & The One. Hope they will be helpful to anyone considering these two tents but don’t have access to, or experience with either (like myself).
In section B, the figure is centered on the ridge/pole location and not offset to be more aligned with the opening because people come in different sizes, it’s just a diagram. Most of the dimensions were taken from the manufacturers specs but some (marked with [?]) I had to calculate from looking at photos. Feel free to fill in the blanks and I’ll try to update the drawings.

